In 2080, cars are going to be different. The car of new type is made from China. The motor is quicker than other cars. The car can be droved 500 kilometers per hour.
Computers are going to be inside every car. It is going to control the car. You don’t need to be worried about the red light.
The car is going to go on special tracks above the city. It would be not so crowded and noisy.
There is a special air conditioner in the car. In winter you can be warm there. In summer you can be pleasantly cool.
If you have this car, you will be very fashionable.
凯恩斯把一种资本资产的未来收益与它的供给价格之间的关系称之为这种资本资产的.资本边际效率。资本资产的未来收益,是从资本资产在所生产的生产物的价值中,减去为取得该生产物而支付的开支之后的剩余额。凯恩斯认为,因为经济体系的现状是完全被动的、确定的,所以,对于未来的种种不同看法足以影响目前的情况。也可以这么说,经济体系的现状是利益主体关于未来看法的函数,人们对于未来种种情况的预期是自变量,而经济体系目前的状况是因变量。因此人们在研究实际时间中运行的经济过程时,与被动的、确定的现状相比,肯定对主动的、不感兴趣的未来更感兴趣。因此,凯恩斯特别强调预期的重要意义,这一点给后来的理性预期学派开辟了道路,对于现实生活的种种行为提供了很强大的解释力!
Since the 1970s, with the worsening oil crisis, the major businesses in the automotive internal combustion engine as much as possible to reduce the car's fuel consumption, while sparing no effort in the development of hybrid vehicles and new energy vehicles. There are hybrid gas-electric hybrid and mixed fuel in two forms, both in the car body design is no different with the traditional internal combustion engine vehicles, the future trend is nothing more than a continuation of current trends, efforts to reduce the drag coefficient, reducing weight while increasing strength and stiffness and so on.
Hybrid vehicle technology only in the product over, to really new energy vehicles, preparatory and experimental products, the ultimate trend or completely replace the existing traditional energy vehicles by the new energy vehicles.
© 2022 xuexicn.net,All Rights Reserved.